1. AIVC 44, 1994. An analysis and data summary of the AIVC's numerical database. Technical note AIVC, Air Infiltration and Ventilation Centre, 44.
2. BBC Survey, 1989. Daily Life in the 1980s, General Activities, Vol. 2 (Summer, 1983), Vol. 4 (Winter 1984).
3. British Research Gas, 1997. Private communication.
4. Colucci, R., 1997. Indoor exposure to nitrogen dioxide in London. Ph.D. Thesis, University of London.
5. Coward, S.K.D., Raw, G.J., 1994. The ALSPAC Indoor Environment Study, Chapter 7: Nitrogen Dioxide. Building Research Establishment Note N125/94.